Subtract 21/81 from 6/35
6/35 - 21/81 is -83/945.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
6/35 = 6 × 81/35 × 81 = 486/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
21/81 = 21 × 35/81 × 35 = 735/2835 - Subtract the two like fractions:
486/2835 - 735/2835 = 486 - 735/2835 = -249/2835 - After reducing the fraction, the answer is -83/945
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